A Warmage 14+ with an Int bonus of at least +5 (or an Int bonus of at least +1 and Extra Edge) and Corrupt Arcana (HoH p. 120) can prepare and cast Rapture of Rupture (BoVD p. 101) on up to 14 living creatures (and take 1 Str damage per creature touched, but there's ways around that). These creatures have to make a Fort save or take 6d6+5 damage and be stunned for a round (half damage and no stun on a save). If they fail their save, they continue taking 1d6+5 per round until they get magical healing or make a Heal check (Or die, obviously). In addition, whenever a target takes 6 or more damage from the spell in a round, they're stunned for a round. The minimum damage of 1d6+5 is 6, so they're stunned until they get magical healing or make a Heal check. And since the spell's duration is instantaneous, that might just be forever (or, again, until they die).